president obama has five mock debates under his belt. he's been practicing under senator john kerry. the president's goals are to keep his answers tight and be aggressive without overdoing it. a new poll in "the wall street journal" shows nearly 40% of registered voters say the upcoming debate are extremely or quite important to help them determine their vote. you can watch the debate tomorrow night at 6:00. >>> triple digits for the first week of fall. if you were outside or inside, you felt the heat. and the heat is still on tonight. san jose is in the 70s. san jose tied a record from 1986 with a high of 96. let's bring in jeff raineri. not only hot. but some of the hottest temperatures of the year. >> looks like it. as we headed throughout the day, not only of the season but of the past 12 months, this will rank in the top-five hottest days on the first full week of fall. gilroy 107. san francisco at a very sweltering 94. just two degrees away from setting a record in the city. not only interior valleys. but also at the coastline gett